stack light
noun1
A column of color-coded electric lights, used to indicate the status of a machine or process.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun
A column of color-coded electric lights, used to indicate the status of a machine or process.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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